NMT1272S [CANDD]
Triple Output 3W DC-DC Converters; 三路输出3W DC-DC转换器
| 型号： | NMT1272S |
| 厂家： | 
C&D TECHNOLOGIES |
| 描述： | Triple Output 3W DC-DC Converters |
| 文件： | 总2页 (文件大小：142K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
NMT SERIES
Triple Output 3W DC-DC Converters
SELECTION GUIDE
2
3
Nominal
Input
Voltage Output
Rated
Output
Voltage
Output Current
Output Current
MIN
Full
MIN
Full
1
Load
Load
Load
Load
MTTF
Order Code
(V)
V
(mA)
(mA)
(mA)
(mA)
kHrs
VO1
VO2
VO3
VO1
VO2
VO3
–24
1.4
42
21
14
42
21
14
4.2
126
63
NMT0572S
5
–48
–72
–24
–48
–72
0.7
0.5
1.4
0.7
0.5
2.1
1.4
4.2
2.1
1.4
145
42
126
63
NMT1272S
12
145
FEATURES
■ Triple Outputs (–24V, –48V & –72V)
■ Toroidal Magnetics
42
When operated with additional external load capacitance the rise time of the input voltage will determine the
maximum external capacitance value for guaranteed start up. The slower the rise time of the input voltage the
greater the maximum value of the additional external capacitance for reliable start up.
■ Input/Output Isolation 1kVDC
■ Power Sharing on Outputs
■ Internal SMD Construction
■ Industrial Temperature Range
■ No External Components Required
INPUT CHARACTERISTICS
Parameter
Conditions
MIN
4.5
10.8
TYP
5.0
12
85
66
MAX
5.5
13.2
Units
NMT0572S
NMT1272S
Voltage Range
(VIN)
V
NMT0572S
NMT1272S
Ripple Current
mA
mA
(IRIPPLE
)
3
■ Power Density 1.41W/cm
■ UL 94V-0 Package Material
NMT0572S, 0% output load
NMT1272S, 0% output load
50
27.5
80
50
Zero Load Input
Current (ICCZL
)
OUTPUT CHARACTERISTICS
DESCRIPTION
Parameter
Conditions
MIN
TYP
MAX
Units
Total of all outputs or any
The NMT series is a range of DC-DC
converters offering three output voltages of
–24V, –48V and –72V from a single isolated
5V or 12V input voltage. The product is
designed for use with telecommunications
circuits requiring an on board supply for the
–72V RING-TIP connection service generated
from a nominal 5V or 12V DC input supply
rail. The device also offers battery level
voltages of –24V and –48V for access
control and data pump IC's. The product is
packaged in an 8 pin SIP case for minimum
PCB footprint. The rated power may be
shared or drawn from any one output
providing the total output load does not
exceed 3W.
Total Rated Power (POUT
)
0.1
3.0
W
single output
POUT = 100mW
POUT = 3W
POUT = 100mW
POUT = 3W
POUT = 100mW
POUT = 3W
0
10
2.5
Single Channel Voltage
Setpoint Accuracy
%
V
V
V
–7.5
24.0
22.2
48.0
44.4
72.0
66.6
26.4
24.6
52.8
49.2
79.2
73.8
Output Voltage - VO1 (VOUT
Output Voltage - VO2 (VOUT
Output Voltage - VO3 (VOUT
)
)
)
POUT = 100mW
POUT = 3W
VIN = 90% to 110%
Line Regulation
Load Regulation
1.01
8
1.2
15
%
%
of nominal
POUT = 100mW to 3W
DC to 20MHz single
Ripple & Noise
0
220
400
mV
channel (24V)
ABSOLUTE MAXIMUM RATINGS
Short-circuit duration4
1 second
300°C
7V
Lead temperature 1.5mm from case for 10 seconds
Input voltage VIN, NMT0572S
Input voltage VIN, NMT1272S
15V
ISOLATION CHARACTERISTICS
Parameter
Conditions
MIN
TYP
MAX Units
Isolation Voltage (VISOL
)
Flash tested for 1 second
NMT0572S, 1MHz, 1V
NMT1272S, 1MHz, 1V
1000VDC test
1000
VDC
65
130
10
Isolation Capacitance (CISOL
)
pF
Insulation Resistance
1
GW
GENERAL CHARACTERISTICS
Parameter
Efficiency
Conditions
All channels or any single channel
MIN
75
TYP
85
MAX Units
%
Switching Frequency (fOSC
)
85
kHz
1 Calculated using MIL-HDBK-217F with nominal input voltage at full load.
2 Assuming all 3 channels are equally loaded.
3 Assuming only 1 channel is loaded.
4 Supply voltage must be discontinued at the end of the short circuit duration.
All specifications typical at TA=25°C, nominal input voltage and rated output current unless otherwise specified.
www.dc-dc.com
NMT SERIES
Triple Output 3W DC-DC Converters
TEMPERATURE CHARACTERISTICS
PIN CONNECTIONS
Parameter
Conditions
MIN
-40
-50
TYP
MAX Units
PIN
Operating Temperature (TA)
Storage
Case Temperature Rise
Above Ambient
85
125
°C
°C
1
2
5
6
7
8
VIN
GND
0V
V01
V02
V03
1 litre static air chamber
27
°C
OUTPUT VOLTAGE CONFIGURATION
Although the output is described for negative rails, the input and output circuits are internally
isolated hence positive rails can also be generated, or a mixture of positive and negative.
The output 0V rail reference can be taken from any of the output terminals to give the range
of outputs as described in Output Voltage Configurations table below.
POWER SHARING
The 3W total power delivery can be taken from
either a single channel, or from any combination of
all three channels. This allows an enormous amount
of flexibility, especially when combined with the
selectable output 0V reference. For example, using
the option 2 output configuration; –24V at 0.5W,
+24V at 1W and +48V at 1.5W power supplies
are available from a single NMT device.
Channel Name
Standard Ref
0V
Option 1
+24V
0V
–24V
–48V
Option 2
+48V
+24V
0V
Option 3
0V
+72V
+48V
+24V
0V
V01
V02
V03
–24V
–48V
–72V
–24V
PERFORMANCE CHARACTERISTICS
NMT0572S – Channel V01 (24V NOM)
NMT1272S – Channel V01 (24V NOM)
100
80
60
40
20
0
40
36
32
28
24
20
100
80
60
40
20
0
40
36
32
28
24
20
0
0
0
0.5 1.0 1.5 2.0 2.5 3.0
Output Power (W)
0
0.5 1.0 1.5 2.0 2.5 3.0
Output Power (W)
0
0
0
0.5 1.0 1.5 2.0 2.5 3.0
Output Power (W)
0
0.5 1.0 1.5 2.0 2.5 3.0
Output Power (W)
NMT0572S – Channel V02 (48V NOM)
NMT1272S – Channel V02 (48V NOM)
100
80
60
40
20
0
80
100
80
60
40
20
0
80
72
64
56
48
40
72
64
56
48
40
0.5 1.0 1.5 2.0 2.5 3.0
Output Power (W)
0
0.5 1.0 1.5 2.0 2.5 3.0
Output Power (W)
0.5 1.0 1.5 2.0 2.5 3.0
Output Power (W)
0
0.5 1.0 1.5 2.0 2.5 3.0
Output Power (W)
NMT0572S – Channel V03 (72V NOM)
NMT1272S – Channel V03 (72V NOM)
100
80
60
40
20
0
120
100
80
60
40
20
0
120
108
96
84
72
60
108
96
84
72
60
0.5 1.0 1.5 2.0 2.5 3.0
Output Power (W)
0
0.5 1.0 1.5 2.0 2.5 3.0
Output Power (W)
0.5 1.0 1.5 2.0 2.5 3.0
0
0.5 1.0 1.5 2.0 2.5 3.0
Output Power (W)
Output Power (W)
MECHANICAL DIMENSIONS
1.17
0.30
0.20
NMT0572S
7.50
11.10
XYYWW
0.55
0.45
2.54
2.10
0.55
0.45
21.80
4.60
3.60
All dimensions in mm XX.XX 0.25mm.
All pins on a 2.54mm pitch and within 0.25mm of true position.
Weight: 3.85g
1
2
5
6
7
8
C&D Technologies (NCL) Limited reserve the right to alter or improve the
specification, internal design or manufacturing process at any time, without
notice. Please check with your supplier or visit our web site to ensure that
you have the current and complete specification for your product before use.
C&D Technologies (NCL) Ltd
Tanners Drive, Blakelands North
Milton Keynes MK14 5BU, England
Tel: +44 (0)1908 615232
Fax:+44 (0)1908 617545
email: info@cdtechno-ncl.com
C&D Technologies (NCL), Inc.
5816 Creedmoor Road, Raleigh
NC 27612, USA
Tel: +1 (919) 571-9405
Fax: +1 (919) 571-9262
© C&D Technologies (NCL) Limited 2001
NDC NMT.3
email: info@us.cdtechno-ncl.com
No part of this publication may be copied, transmitted or stored in
a
retrieval system or reproduced in any way including, but not limited to,
photography, photocopy, magnetic or other recording means, without prior
written permission from C&D Technologies (NCL) Limited.
www: http://www.dc-dc.com
Instructions for use are available from www.dc-dc.com
相关型号：
NMT2222L99Z
Small Signal Bipolar Transistor, 1A I(C), 40V V(BR)CEO, 2-Element, NPN, Silicon
FAIRCHILD
NMT2907L99Z
Small Signal Bipolar Transistor, 0.8A I(C), 60V V(BR)CEO, 2-Element, PNP, Silicon
FAIRCHILD
©2020 ICPDF网 联系我们和版权申明